A318549 Number of nX5 0..1 arrays with every element unequal to 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

3, 21, 44, 219, 842, 3172, 12073, 49181, 191426, 766695, 3049529, 12107020, 48250678, 192019906, 764373285, 3043515961, 12116244368, 48238515390, 192056199827, 764631673154, 3044276102274, 12120342053719, 48255337743357

Offset

1,1

Comments

Column 5 of A318552.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=5
..0..1..1..0..1. .0..1..1..1..1. .0..1..0..1..1. .0..1..1..1..1
..1..1..1..1..1. .1..0..1..0..1. .1..1..1..1..0. .1..1..0..0..0
..0..1..1..0..0. .1..1..1..1..1. .1..0..1..1..1. .1..1..0..0..1
..1..1..1..0..0. .0..1..1..0..1. .1..1..1..0..1. .0..0..0..0..0
..0..0..0..1..0. .1..0..1..1..0. .1..0..1..1..0. .0..1..0..0..1

Crossrefs

Cf. A318552.

Sequence in context: A056377 A146712 A364051 * A217000 A360316 A034186

Adjacent sequences: A318546 A318547 A318548 * A318550 A318551 A318552

Keyword

nonn

Author

R. H. Hardin, Aug 28 2018

Status

approved